Door lock



FIG. 1 is a top, front, right side perspective view of a door lock;

FIG. 2 is a front elevation view of FIG. 1;

FIG. 3 is a rear elevation view of FIG. 1;

FIG. 4 is a left side elevation view of FIG. 1;

FIG. 5 is a right side elevation view of FIG. 1;

FIG. 6 is a top plan view of FIG. 1; and,

FIG. 7 is a bottom plan view of FIG. 1.

The radiating lines emanating from the central region of FIGS. 1, 2 and 4-6 indicate illumination. The dash-dash broken lines show portions of the door lock that form no part of the claimed design. The dot-dash broken lines represent boundaries of the claimed design and form no part of the claimed design. 

CLAIM The ornamental design for a door lock, as shown and described. 